(TrendHunter.com) The ‘COSRX Advanced The Vitamin C 23 Serum‘ is a high-performance blemish-toning formula designed to refine, brighten, and revitalize the skin with gentleness. Formulated with 23% pure vitamin C,…(TrendHunter.com) The ‘COSRX Advanced The Vitamin C 23 Serum’ is a high-performance blemish-toning formula designed to refine, brighten, and revitalize the skin with gentleness. Formulated with 23% pure vitamin C,…